[IPython-User] Pretty print as default print function

Gökhan Sever gokhansever@gmail....
Fri Nov 9 19:10:40 CST 2012


Thanks for the reply Thomas.

I still use Python 2.7, along with all of the scientific Python stack.

Do you think is there a simple way to modify IPython's "run" command so
that output's pretty printed just like IPython shell?


On Fri, Nov 9, 2012 at 2:28 AM, Thomas Kluyver <takowl@gmail.com> wrote:

> In python 3, you can replace the builtin print function. I don't know of
> any way to modify the behaviour of print statements in python 2.
>
> Thomas
> On Nov 9, 2012 6:59 AM, "Gökhan Sever" <gokhansever@gmail.com> wrote:
>
>> Hello,
>>
>> I would like to be able print NumPy arrays matching the IDL's array print
>> outout. For instance:
>>
>> IDL> print, findgen(5)
>>       0.00000      1.00000      2.00000      3.00000      4.00000
>> IDL> print, dindgen(5)
>>        0.0000000       1.0000000       2.0000000       3.0000000
>> 4.0000000
>>        0.0000000       1.0000000       2.0000000       3.0000000
>> 4.0000000
>>
>>
>> I1 np.arange(5, dtype='float64')
>> O1        0.0000000       1.0000000       2.0000000       3.0000000
>> 4.0000000
>>
>> I2 np.arange(5, dtype='float32')
>> O2       0.00000      1.00000      2.00000      3.00000      4.00000
>>
>> Ignoring O1 and O2 lines, outputs (formatting) are matching. I achieved
>> this by defining some custom pprint formatters in the IPy config file.
>>
>> However, this is only valid within IPython while just typing array names.
>> For instance, running these lines revert the printing settings back to
>> normal.
>>
>> Is there a way to make this type of customized printing default for
>> executing a file via Python? ie., can we replace python's print statement
>> with pprint?
>>
>> If not, should I edit numpy/core/arrayprint.py and use a pythonrc file to
>> achieve the effect?
>>
>> I am also interested in custom printing other data types than nd.arrays.
>>
>> Thanks.
>>
>> --
>> Gökhan
>>
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-- 
Gökhan
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